232 results on '"Johnston DR"'
Search Results
2. Modern and Future Issues facing Civil Engineering and Construction
- Author
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Johnston, Dr Brian, primary
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- 2021
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3. Further observations on the life history of 'Argyreus hyperbius inconstans' Butler (Lepidoptera: Nymphalidae) in captivity
- Author
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Johnston, LM and Johnston, DR
- Published
- 1984
4. Die Kombinationen von Donor-spezifischen Transfusionen mit Cyclosporin A oder Rapamycin haben unterschiedliche Effekte auf die Toleranzinduktion für cardiale Allotransplantate und die Entstehung Cardialer Allograftvaskulopathie im Miniaturschweinmodell
- Author
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Hoerbelt, R, Shoji, T, Johnston, DR, Muniappan, A, Padberg, W, Sachs, DH, and Madsen, JC
- Subjects
ddc: 610 - Published
- 2005
5. Pre-transplant Donor-specifc Transfusions combined with Cyclosporine induce Tolerance to MHC class I-mismatched Cardiac Allografts in Miniature Swine
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Hoerbelt, R, Shoji, T, Johnston, DR, Padberg, W, Sachs, DH, and Madsen, JC
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ddc: 610 - Published
- 2004
6. Letters to the Editor
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Johnston, Dr Stuart, primary
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- 2015
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7. Die bei allogenen und syngenen Transplantaten akzelerierte Abstoßung durch lokale Interferon-gamma Perfusion wird durch die Induktion immunologischer Toleranz verhindert
- Author
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Hoerbelt, R, Shoji, T, Johnston, DR, Benjamin, LC, Padberg, W, Sachs, DH, Madsen, JC, Hoerbelt, R, Shoji, T, Johnston, DR, Benjamin, LC, Padberg, W, Sachs, DH, and Madsen, JC
- Published
- 2005
8. Remodeling the ivy tower for mothers in academe. (In Their Own Words)
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Swanson, Dr. Debra H. and Johnston, Dr. Deirdre D.
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Parenting -- Methods ,Parenting -- Social aspects ,Women college teachers -- Practice ,Working mothers -- Social aspects ,Business ,Business, international ,News, opinion and commentary ,Political science - Abstract
During final exam week, my young daughter came down with croup. She was so weak and sick that the doctor sent her immediately to the hospital, where she was put [...]
- Published
- 2002
9. Common rashes in children: 2
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Mansouri, Dr Yasaman, primary and Johnston, Dr Graham, additional
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- 2007
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10. Earth Observations in Environmental Diplomacy
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Johnston, Dr. Shaida, primary
- Published
- 2006
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11. The Contradictions of Modern Moral Philosophy
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Johnston, Dr Paul, primary and Johnston, Paul, additional
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- 2004
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12. Wittgenstein: Rethinking the Inner
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Johnston, Dr Paul, primary and Johnston, Paul, additional
- Published
- 2002
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13. Baseline Cholesterol Level and Magnitude of Coronary Event Reduction in Diabetic Patients With Myocardial Infarction
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Johnston, Dr Colin, primary
- Published
- 1999
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14. Preoperative prediction of non-home discharge: a strategy to reduce resource use after cardiac surgery.
- Author
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Pattakos G, Johnston DR, Houghtaling PL, Nowicki ER, and Blackstone EH
- Published
- 2012
15. An Economic Analysis of International Airline Pricing Strategies
- Author
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Johnston, Dr. Everett and Kau, Dr. James
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Public Economics - Abstract
Presented at the 1st International Conference on Transportation Research, June 1973, Bruges, Belgium
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- 1973
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16. Letter from William Foster, Secretary Office of Alabama Railroad Company, Tuskaloosa, Alabama to Dr. Johnston, Cedar (?) Bluff, Alabama, July 30, 1857
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Johnston, Dr. (Addressee), Foster, William S. (Correspondent), Johnston, Dr. (Addressee), and Foster, William S. (Correspondent)
- Abstract
The digitization of this collection was funded by a gift from EBSCO Industries.
17. Letter from William Foster, Secretary Office of Alabama Railroad Company, Tuskaloosa, Alabama to Dr. Johnston, Cedar (?) Bluff, Alabama, July 30, 1857
- Author
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Johnston, Dr. (Addressee), Foster, William S. (Correspondent), Johnston, Dr. (Addressee), and Foster, William S. (Correspondent)
- Abstract
The digitization of this collection was funded by a gift from EBSCO Industries.
18. Cholecystokinin abnormalities in coeliac disease
- Author
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Polak, JM, primary, Bloom, SR, additional, McCrossan, MV, additional, Timson, CM, additional, Johnston, DR, additional, Hudson, D, additional, Szelke, M, additional, and Pearse, AGE, additional
- Published
- 1978
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19. THE PREPARATION OF EEL SCALES FOR MICROSCOPIC EXAMINATION
- Author
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Johnston, Dr. Miles, primary
- Published
- 1923
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20. Hemopericardium, Shock, and a Linear Density in the Ascending Aorta: Is it a Dissection?
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Lai JE, Johnston DR, Stewart WJ, Vest AR, and Menon V
- Subjects
- *
AORTA surgery , *AORTA injuries , *ASCENDING aorta dissection , *AORTIC diseases , *PERICARDIAL effusion , *SHOCK (Pathology) , *PROSTHETIC heart valves - Published
- 2012
21. Optimizing automated photo identification for population assessments.
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Patton PT, Pacifici K, Baird RW, Oleson EM, Allen JB, Ashe E, Athayde A, Basran CJ, Cabrera E, Calambokidis J, Cardoso J, Carroll EL, Cesario A, Cheney BJ, Cheeseman T, Corsi E, Currie JJ, Durban JW, Falcone EA, Fearnbach H, Flynn K, Franklin T, Franklin W, Vernazzani BG, Genova T, Hill M, Johnston DR, Keene EL, Lacey C, Mahaffy SD, McGuire TL, McPherson L, Meyer C, Michaud R, Miliou A, Olson GL, Orbach DN, Pearson HC, Rasmussen MH, Rayment WJ, Rinaldi C, Rinaldi R, Siciliano S, Stack SH, Tintore B, Torres LG, Towers JR, Moore RBT, Weir CR, Wellard R, Wells RS, Yano KM, Zaeschmar JR, and Bejder L
- Abstract
Several legal acts mandate that management agencies regularly assess biological populations. For species with distinct markings, these assessments can be conducted noninvasively via capture-recapture and photographic identification (photo-ID), which involves processing considerable quantities of photographic data. To ease this burden, agencies increasingly rely on automated identification (ID) algorithms. Identification algorithms present agencies with an opportunity-reducing the cost of population assessments-and a challenge-propagating misidentifications into abundance estimates at a large scale. We explored several strategies for generating capture histories with an ID algorithm, evaluating trade-offs between labor costs and estimation error in a hypothetical population assessment. To that end, we conducted a simulation study informed by 39 photo-ID datasets representing 24 cetacean species. We fed the results into a custom optimization tool to discern the optimal strategy for each dataset. Our strategies included choosing between truly and partially automated photo-ID and, in the case of the latter, choosing the number of suggested matches to inspect. True automation was optimal for datasets for which the algorithm identified individuals well. As identification performance declined, the optimization recommended that users inspect more suggested matches from the ID algorithm, particularly for small datasets. False negatives (i.e., individual was resighted but erroneously marked as a first capture) strongly predicted estimation error. A 2% increase in the false negative rate translated to a 5% increase in the relative bias in abundance estimates. Our framework can be used to estimate expected error of the abundance estimate, project labor effort, and find the optimal strategy for a dataset and algorithm. We recommend estimating a strategy's false negative rate before implementing the strategy in a population assessment. Our framework provides organizations with insights into the conservation benefits and consequences of automation as conservation enters a new era of artificial intelligence for population assessments., (© 2025 Society for Conservation Biology.)
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- 2025
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22. Comprehensive management and classification of first branchial cleft anomalies: An International Pediatric Otolaryngology Group (IPOG) consensus statement.
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Heilingoetter AL, See GB, Brookes J, Campisi P, Cervantes SS, Chadha NK, Chelius D, Chen D, Chun B, Cunningham MJ, D'Souza JN, Din T, Dzongodza T, Francom C, Gallagher TQ, Gerber ME, Gorelik M, Goudy S, Graham ME, Hartley B, Hazkani I, Hong P, Hsu WC, Isaac A, Jatana KR, Johnston DR, Kabagenyi F, Kazahaya K, Koempel J, Leboulanger N, Luscan R, Maurrasse SE, Mercier E, Peer S, Preciado D, Rahbar R, Rastatter J, Richter G, Rosenblatt SD, Shay SG, Sheyn A, Tassew Y, Walz PC, Whigham AS, Wiedermann JP, Yeung J, and Maddalozzo J
- Subjects
- Child, Humans, Consensus, Craniofacial Abnormalities, Otolaryngology, Branchial Region abnormalities, Branchial Region surgery, Delphi Technique
- Abstract
Objective: First branchial cleft anomalies are rare congenital head and neck lesions. Literature pertaining to classification, work up and surgical treatment of these lesions is limited and, in some instances, contradictory. The goal of this work is to provide refinement of the classification system of these lesions and to provide guidance for clinicians to aid in the comprehensive management of children with first branchial cleft anomalies., Materials and Methods: Delphi method survey of expert opinion under the direction of the International Pediatric Otolaryngology Group (IPOG) was conducted to generate recommendations for the definition and management of first branchial cleft anomalies. The recommendations are the result of expert consensus and critical review of the literature., Results: Consensus recommendations include evaluation and diagnostic considerations for children with first branchial cleft anomalies as well as recommendations for surgical management. The current Work classification system was reviewed, and modifications were made to it to provide a more cogent categorization of these lesions., Conclusion: The mission of the International Pediatric Otolaryngology Group (IPOG) is to develop expertise-based recommendations based on review of the literature for the management of pediatric otolaryngologic disorders. These consensus recommendations are aimed at improving care of children presenting with first branchial cleft anomalies. Here we present a revised classification system based on parotid gland involvement, with a focus on avoiding stratification based on germ layer, in addition to guidelines for management., Competing Interests: Declaration of competing interest Below we have listed any relevant disclosures or conflicts of interest among the authors of our manuscript, “Comprehensive management and classification of first branchial cleft anomalies: An International Pediatric Otolaryngology Group (IPOG) consensus statement.” Daniel Chelius, MD: Leadership role and stipend as AAO-HNSF Annual Meeting Coordinator, 2021–2024. Steven Goudy, MD, MBA: Founder and Chief Medical Officer of Dr. Noze Best. Kris Jatana, MD, FACS, FAAP: Royalties (Marpac Inc.), Shareholder (Tivic Health Systems), Officer/Shareholder (Zotarix LLC, in collaboration with Grace Medical). For all remaining authors of this work, there are no conflicts of interest or financial disclosures to report., (Copyright © 2024. Published by Elsevier B.V.)
- Published
- 2024
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23. Assessing national trends in indications for pediatric total thyroidectomy.
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Puchi C, Raval MV, Tian Y, Josefson J, Samis J, Johnston DR, Maddalozzo J, Rastatter J, and Hazkani I
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- Humans, Female, Male, United States, Child, Adolescent, Child, Preschool, Incidence, Thyroid Neoplasms surgery, Databases, Factual, Thyrotoxicosis surgery, Thyrotoxicosis epidemiology, Sex Factors, Thyroidectomy trends, Thyroidectomy statistics & numerical data, Thyroidectomy methods, Graves Disease surgery
- Abstract
Purpose: The most common indications for total thyroidectomy (TT) in children are malignancy and thyrotoxicosis due to Graves' disease (GD). However, the incidence of patients with GD among patients undergoing TT is unknown. This study aims to examine trends in pediatric TT., Materials and Methods: The US Agency for Health Research and Quality Healthcare Cost and Utilization Project (HCUP) Kids' Inpatient Database (KID) was queried to identify patients who underwent TT between 1997 and 2019. Weighted national estimates were obtained. Statistical analysis was completed using univariate logistic regression and one-sided Mann-Kendall Test., Results: An estimated 4803 pediatric patients underwent TT within the study years. GD was the indication in 25 % of cases. Mann-Kendall testing showed a trend toward an increasing proportion of TT for GD without reaching statistical significance (z = 1.3609, S = 12, p = 0.0688). Statistically significant univariate associations were found among those who underwent thyroidectomy for GD compared to other indications, as they were more likely to be female (β = 0.286, 95 % CI [0.058, 0.514], p = 0.014), Black, or Hispanic (β = 1.392 [1.064, 1.721], p < 0.001; and β = 0.562 [0.311, 0.814], p < 0.001, respectively). Additionally, they were less likely to have private insurance (β = -0.308 [-1.076, -0.753], p = 0.002) and more likely to live in a ZIP code associated with a median household income below the 50th percentile (β = 0.190 [0.012, 0.369], p = 0.036). The associations with the female sex, Black race, and Hispanic race persisted in multivariate analysis., Conclusion: GD appears to be an increasingly prevalent indication for TT. Patient characteristics differ from those who undergo TT for other diagnoses., Competing Interests: Declaration of competing interest The authors have no disclosures or conflicts of interest., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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24. Pericardial Diseases and Best Practices for Pericardiectomy: JACC State-of-the-Art Review.
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Al-Kazaz M, Klein AL, Oh JK, Crestanello JA, Cremer PC, Tong MZ, Koprivanac M, Fuster V, El-Hamamsy I, Adams DH, and Johnston DR
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- Humans, Pericarditis, Constrictive surgery, Pericardium surgery, Pericarditis surgery, Pericardiectomy methods
- Abstract
Remarkable advances have occurred in the understanding of the pathophysiology of pericardial diseases and the role of multimodality imaging in this field. Medical therapy and surgical options for pericardial diseases have also evolved substantially. Pericardiectomy is indicated for chronic or irreversible constrictive pericarditis, refractory recurrent pericarditis despite optimal medical therapy, or partial agenesis of the pericardium with a complication (eg, herniation). A multidisciplinary evaluation before pericardiectomy is essential for optimal patient outcomes. Overall, given the good outcomes reported, radical pericardiectomy on cardiopulmonary bypass, if feasible, is the preferred approach. Due to patient complexity, as well as the technical aspects of the surgery, pericardiectomy should be performed at high-volume centers that have the required expertise. The current review highlights the essential features of this multidisciplinary approach from diagnosis to recovery in patients undergoing pericardiectomy., Competing Interests: Funding Support and Author Disclosures Dr Al-Kazaz has received research grant and speaking honoraria from Kiniksa pharmaceuticals. Dr Klein has received research grant and scientific advisory board honoraria from Kiniksa pharmaceuticals and Cardiol Therapeutics. Dr Cremer has served on scientific advisory boards for Kiniksa pharmaceuticals and Cardiol Therapeutics. Dr Tong has received consulting and speaking honoraria from Abbott and Abiomed. Dr Johnston has received consulting honoraria from Edwards Lifesciences, Medtronic, Terumo Aortic, and Artivion. All other authors have reported that they have no relationships relevant to the contents of this paper to disclose., (Copyright © 2024 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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25. Age-Stratified Surgical Aortic Valve Replacement for Aortic Stenosis.
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Mehta CK, Liu TX, Bonnell L, Habib RH, Kaneko T, Flaherty JD, Davidson CJ, Thomas JD, Rigolin VH, Bonow RO, Pham DT, Johnston DR, McCarthy PM, and Malaisrie SC
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- Humans, Aged, Male, Female, Aged, 80 and over, Age Factors, Middle Aged, Aortic Valve surgery, Aortic Valve abnormalities, Retrospective Studies, Treatment Outcome, Postoperative Complications epidemiology, Aortic Valve Stenosis surgery, Aortic Valve Stenosis mortality, Heart Valve Prosthesis Implantation methods
- Abstract
Background: The management of aortic stenosis has evolved to stratification by age as reflected in recent societal guidelines. We evaluated age-stratified surgical aortic valve replacement (SAVR) trends and outcomes in patients with bicuspid aortic valve (BAV) or tricuspid aortic valve (TAV) from The Society of Thoracic Surgeons Adult Cardiac Surgery Database., Methods: This cohort included adults (≥18 years) undergoing SAVR for severe aortic stenosis between July 2011 and December 2022. Comparisons were stratified by age (<65 years, 65-79 years, ≥80 years) and BAV or TAV status. Primary end points included operative mortality, composite morbidity and mortality, and permanent stroke. Observed to expected ratios by The Society of Thoracic Surgeons predicted risk of mortality were calculated., Results: In total, 200,849 SAVR patients (55,326 BAV [27.5%], 145,526 TAV [72.5%]) from 1238 participating hospitals met study criteria. Annual SAVR volumes decreased by 45% (19,560 to 10,851) during the study period. The decrease was greatest (96%) for patients ≥80 years of age (4914 to 207). The relative prevalence of BAV was greater in younger patients (<65 years, 69,068 [49.5% BAV]; 65-79 years, 104,382 [19.1% BAV]; ≥80 years, 27,399 [4.5% BAV]). The observed mortality in <80-year-old BAV patients (<65 years, 1.08; 65-79 years, 1.21; ≥80 years, 3.68) was better than the expected mortality rate (<65 years, 1.22; 65-79 years, 1.54; ≥80 years, 3.14)., Conclusions: SAVR volume in the transcatheter era has decreased substantially, particularly for patients ≥80 years old and for those with TAV. Younger patients with BAV have better than expected outcomes, which should be carefully considered during shared decision-making in the treatment of aortic stenosis. SAVR should remain the preferred therapy in this population., (Copyright © 2024 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)
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- 2024
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26. Maximizing Minimally Invasive Cardiac Surgery With Enhanced Recovery (ERAS).
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Salenger R, Ad N, Grant MC, Bakaeen F, Balkhy HH, Mick SL, Sardari Nia P, Kempfert J, Bonaros N, Bapat V, Wyler von Ballmoos MC, Gerdisch M, Johnston DR, and Engelman DT
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- Humans, Perioperative Care methods, Hemodynamics physiology, Minimally Invasive Surgical Procedures methods, Cardiac Surgical Procedures methods, Enhanced Recovery After Surgery
- Abstract
We convened a group of cardiac surgeons, intensivists, and anesthesiologists with extensive experience in minimally invasive cardiac surgery (MICS) and perioperative care to identify the essential elements of a MICS program and the relationship with Enhanced Recovery After Surgery (ERAS). The MICS incision should minimize tissue invasion without compromising surgical goals. MICS also requires safe management of hemodynamics and preservation of cardiac function, which we have termed myocardial management . Finally, comprehensive perioperative care through an ERAS program should be provided to allow patients to achieve optimal recovery. Therefore, we propose that MICS requires 3 elements: (1) a less invasive surgical incision (non-full sternotomy), (2) optimized myocardial management, and (3) ERAS. We contend that the full benefit of MICS can be achieved only by also utilizing an ERAS platform., Competing Interests: Declaration of Conflicting InterestsThe authors declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: R.S. discloses advisory/consultancy roles with Arthrex, Zimmer Biomet, AtriCure, Encare, La Jolla, Edwards Lifesciences, Terumo. N.A. discloses advisory roles for Genesee Biomedical, Cardiosight, VGS, consultant for AtriCure, consultant with stock options Pulse Biosciences, co-founder Left Atrial Appendage, LLC. H.H.B. discloses role as proctor with Intuitive, Corcym, and Edwards Lifesciences. S.L.M. is a consultant for Medtronic, Artivion, and Johnson & Johnson. P.S.N. is the inventor of various simulators commercialized by Simurghy and reports consultancy agreements with NeoChord, Edwards Lifesciences, Medtronic, Abbott, and Fujifilm. J.K. has received speaker honoraria from Edwards Lifesciences, Medtronic, Artivion, and Abbott. N.B. discloses speaker’s honoraria from Edwards Lifesciences and Medtronic, as well as research grants from Edwards Lifesciences and Corcym. V.B. is a consultant for Edwards Lifesciences, Medtronic, Abbott, and Boston Scientific. M.G. discloses advisory, consultancy, and/or research roles with Arthrex, Artivion, AtriCure, Abbott, Edwards Lifesciences, Corvivo, Corcym, and DASI Simulations. D.J. discloses consultancy for Edwards Lifesciences, Medtronic, Abbott, Artivion, and Corcym. D.T.E. discloses a Device Safety Monitoring Board role for Edwards Lifesciences, Medical Advisory Board for Astellas Pharma, Alexion, Terumo, Medela, Arthrex, and Renibus Therapeutics. All other authors have no disclosures.
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- 2024
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27. Ultra-Hybrid Repair: Open Thoracoabdominal Completion After Descending Stent Grafting.
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Thompson MA, Lowry AM, Caputo F, Johnston DR, Smolock C, Vargo P, Blackstone EH, and Roselli EE
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- Humans, Middle Aged, Male, Female, Aged, Risk Factors, Treatment Outcome, Time Factors, Retrospective Studies, Adult, Risk Assessment, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation instrumentation, Blood Vessel Prosthesis Implantation mortality, Endovascular Procedures adverse effects, Endovascular Procedures instrumentation, Endovascular Procedures mortality, Stents, Aortic Dissection surgery, Aortic Dissection diagnostic imaging, Aortic Dissection mortality, Postoperative Complications etiology, Aortic Aneurysm, Thoracic surgery, Aortic Aneurysm, Thoracic diagnostic imaging, Aortic Aneurysm, Thoracic mortality, Blood Vessel Prosthesis, Hospital Mortality
- Abstract
To characterize patient risk profiles and outcomes associated with staged ultra-hybrid repair of extensive aortic disease, in which open thoracoabdominal completion was performed after thoracic stent grafting. From 1/2006 to 1/2021, 92 patients underwent open thoracoabdominal repair of chronic dissection (n=58, 63%), degenerative aneurysm (n=28, 30%), endoleak (n=4, 4.3%), or symptomatic acute type B dissection (n=2, 2.2%) after descending thoracic stent grafting (69, 75%), frozen elephant trunk (5, 5%), or both (18, 20%). The surgical graft was sewn to the distal endovascular device in situ, reducing the extent of the open procedure and eliminating the need for hypothermic circulatory arrest. Mean age was 58±13 years, 89 (97%) were hypertensive, 38 (43%) had chronic obstructive pulmonary disease, 63 (72%) were smokers, 20 (24%) had a prior stroke, and 33 (36%) had a suspected or confirmed heritable aortic condition. Hospital mortality was 7.6% (n=7). Complications included dialysis (16, 20%), tracheostomy (8, 8.7%), stroke (5, 5.7%), and permanent paralysis (6, 6.9%). Survival at 1, 3, and 5 years was 80%, 71%, and 66%, respectively. Mortality was associated with higher blood urea nitrogen and longer distance between the distal endograft edge and proximal patent visceral vessel (P=0.004 and .01, respectively). Patients with extensive aortic disease undergoing open aortic repair after thoracic stent grafting are often young with chronic dissection, multiple comorbidities, or a heritable aortic condition. Success of staged ultra-hybrid operations demonstrates open and endovascular repair strategies are complementary, even when performed in a high-risk patient population., (Copyright © 2022. Published by Elsevier Inc.)
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- 2024
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28. Implanted size and structural valve deterioration in the Edwards Magna bioprosthesis.
- Author
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Johnston DR, Mehta C, Malaisrie SC, Baldridge AS, Pham DT, Bryner B, Medina MG, Chiu S, Hodges KE, and McCarthy PM
- Abstract
Background: The desire of patients to avoid anticoagulation, together with the potential of valve-in-valve (VIV) transcatheter aortic valve replacement (TAVR), have resulted in the increasing use of bioprosthetic valves for aortic valve replacement (AVR). While patient-prosthesis mismatch (PPM) is known to be an adverse risk after AVR, few studies have addressed the effect of PPM on valve durability. This study evaluates the role of valve size and hemodynamics on long term durability after AVR with a Magna bioprosthesis., Methods: We performed a retrospective, single-center evaluation of patients who underwent a surgical AVR procedure between June 2004 through December 2022 using the Magna bioprosthesis. Perioperative information and long-term follow-up data were sourced from the institution's Society for Thoracic Surgeons Adult Cardiac Surgery Registry and outcomes database. Cumulative incidence of freedom from reintervention were estimated accounting for competing events. Group comparisons used Gray's test., Results: Among 2,100 patients, the mean patient age was 69 years (range, 22-95 years), of whom 98% had native aortic valve disease, 32.5% had concomitant coronary bypass grafting, and 19% had mitral valve surgery. Median follow-up was 5.8 (1.9-9.4) years, during which 116 reinterventions were performed, including 74 explants and 42 VIV procedures. Nine hundred and twenty-eight patients died prior to reintervention. Incidence of all cause reintervention was 1.2%, 4.5%, and 11.7% at 5, 10, and 15 years, respectively. Smaller valve size was associated with worse survival (P<0.001), but not with reintervention. Higher mean gradient at implant was associated with increased late reintervention [sub-distribution hazard ratio: 1.016; 95% confidence interval (CI): 1.005 to 1.028; P=0.0047, n=1,661]., Conclusions: While reintervention rates are low for the Magna prosthesis at 15 years, the analysis is confounded by the competing risk of death. PPM, as reflected physiologically by elevated post-operative valve gradients, portends an increased risk of intervention. Further study is necessary to elucidate the mechanism of early stenosis in patients who progress to reintervention., Competing Interests: Conflicts of Interest: The authors have no conflicts of interest to declare., (2024 Annals of Cardiothoracic Surgery. All rights reserved.)
- Published
- 2024
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29. 2024 ACC/AHA Clinical Performance and Quality Measures for Adults With Valvular and Structural Heart Disease: A Report of the American Heart Association/American College of Cardiology Joint Committee on Performance Measures.
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Jneid H, Chikwe J, Arnold SV, Bonow RO, Bradley SM, Chen EP, Diekemper RL, Fugar S, Johnston DR, Kumbhani DJ, Mehran R, Misra A, Patel MR, Sweis RN, and Szerlip M
- Subjects
- Adult, United States, Humans, Quality Indicators, Health Care, American Heart Association, Cardiology, Heart Diseases, Cardiovascular System
- Published
- 2024
- Full Text
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30. Neighborhood Socioeconomic Status and Readmission in Acute Type A Aortic Dissection Repair.
- Author
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Liu T, Devlin PJ, Whippo B, Vassallo P, Hoel A, Pham DT, Johnston DR, Chris Malaisrie S, and Mehta CK
- Subjects
- Adult, Humans, Male, Female, Risk Factors, Comorbidity, Social Class, Retrospective Studies, Patient Readmission, Aortic Dissection epidemiology, Aortic Dissection surgery
- Abstract
Introduction: We examined the association of socioeconomic status as defined by median household income quartile (MHIQ) with mortality and readmission patterns following open repair of acute type A aortic dissection (ATAAD) in a nationally representative registry., Methods: Adults who underwent open repair of ATAAD were selected using the US Nationwide Readmissions Database and stratified by MHIQ. Patients were selected based on diagnostic and procedural codes. The primary endpoint was 30-d readmission., Results: Between 2016 and 2019, 10,288 individuals (65% male) underwent open repair for ATAAD. Individuals in the lowest income quartile were younger (median: 60 versus 64, P < 0.05) but had greater Elixhauser comorbidity burden (5.9 versus 5.7, P < 0.05). Across all groups, in-hospital mortality was approximately 15% (P = 0.35). On multivariable analysis adjusting for baseline comorbidity burden, low socioeconomic status was associated with increased readmission at 90 d, but not at 30 d. Concomitant renal disease (odds ratio [OR], 1.68; P < 0.001), pulmonary disease (OR, 1.26; P < 0.001), liver failure (OR 1.2, P = 0.04), and heart failure (OR, 1.17; P < 0.001) were all associated with readmission at 90 d. The primary indication for readmission was most commonly cardiac (33%), infectious (16.5%), and respiratory (9%)., Conclusions: In patients who undergo surgery for ATAAD, lower MHIQ was associated with higher odds of readmission following open repair. While early readmission for individuals living in the lowest income communities is likely attributable to greater baseline comorbidity burden, we observed that 90-d readmission rates are associated with lower MHIQ regardless of comorbidity burden. Further investigation is required to determine which patient-level and system-level interventions are needed to reduce readmissions in the immediate postoperative period for resource poor areas., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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31. Well-functioning bicuspid aortic valves should be preserved during aortic replacement for the ascending aortopathy phenotype.
- Author
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Roselli EE, Thompson MA, Yazdchi F, Lowry A, Johnston DR, Desai M, and Blackstone EH
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- Humans, Retrospective Studies, Aortic Valve diagnostic imaging, Aortic Valve surgery, Phenotype, Bicuspid Aortic Valve Disease, Aortic Valve Insufficiency diagnostic imaging, Aortic Valve Insufficiency etiology, Aortic Valve Insufficiency surgery, Heart Valve Diseases complications, Heart Valve Diseases surgery, Aortic Valve Stenosis
- Abstract
Objectives: Consensus has not been reached on whether or not to replace or preserve a well-functioning bicuspid aortic valve (BAV) in patients undergoing aortic replacement for the ascending phenotype of BAV aortopathy. We characterize morphology, evaluate progression of aortic regurgitation or aortic stenosis, and investigate the need for aortic valve replacement in patients whose well-functioning BAV was preserved during ascending aortic replacement ≥10 years prior., Methods: From January 1991 to August 2011, 191 patients with a well-functioning BAV underwent supracoronary aortic replacement (113 valves were minimally repaired). Aortic morphology was evaluated, aortic regurgitation grade and transvalvular aortic gradient modeled parametrically, and survival assessed by the Kaplan-Meier method. Median follow-up was 10 years., Results: Mean aortic diameter was 2.9 ± 0.53 cm at the annulus and 4.2 ± 0.55 cm at the sinuses. Mean maximum ascending diameter was 5.1 ± 0.49 cm. All patients exhibited a cusp-fusion BAV phenotype. Fifteen-year progression to severe aortic regurgitation was 3.2%. Mean aortic valve gradient began to rise 5 years postoperatively to 27 mm Hg by 14 years. Freedom from aortic valve replacement at 1, 5, 10, and 15 years was 100%, 95%, 83%, and 63%, respectively. Minimal valve repair was not associated with late aortic valve replacement. Fifteen-year survival was 74%., Conclusions: Preserving a well-functioning BAV should be considered in carefully selected patients undergoing aortic replacement for the ascending phenotype of BAV aortopathy. The valves remain durable in the long term, with slow progression of regurgitation or stenosis, and low probability of aortic valve replacement through 10 years., (Copyright © 2023. Published by Elsevier Inc.)
- Published
- 2024
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32. Effect of ascending aorta replacement on the long-term outcomes of bicuspid aortic valve repair.
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Svensson LG, Rosinski BF, Miletic K, Hodges K, Rajeswaran J, Griffin B, Desai MY, Kalahasti V, Goff Z, Johnston DR, Vargo PR, Roselli EE, and Blackstone EH
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- Humans, Aorta, Thoracic surgery, Aortic Valve diagnostic imaging, Aortic Valve surgery, Reoperation, Treatment Outcome, Retrospective Studies, Bicuspid Aortic Valve Disease surgery, Aortic Valve Insufficiency diagnostic imaging, Aortic Valve Insufficiency etiology, Aortic Valve Insufficiency surgery, Aortic Aneurysm surgery, Aortic Valve Stenosis surgery
- Abstract
Objective: The study objective was to determine the effect of sinutubular junction stabilization on long-term outcomes of bicuspid aortic valve repair., Methods: From January 1998 to January 2020, 419 patients underwent bicuspid aortic valve repair with ascending aorta replacement and 421 without (bicuspid aortic valve repair alone). Propensity score matching (97 pairs) was used to compare outcomes., Results: Before matching, prevalence of severe aortic regurgitation at 10 years was 5.4% after bicuspid aortic valve repair + ascending aorta replacement and 10% after bicuspid aortic valve repair alone; aortic valve gradient was 20 mm Hg after bicuspid aortic valve repair + ascending aorta replacement and 19 mm Hg after bicuspid aortic valve repair alone. Ten-year freedom from reoperation overall was 79% after bicuspid aortic valve repair + ascending aorta replacement and 75% after bicuspid aortic valve repair alone; freedom from late aortic regurgitation was 93% after bicuspid aortic valve repair + ascending aorta replacement and 92% after bicuspid aortic valve repair alone; and freedom from aortic stenosis was 87% after bicuspid aortic valve repair + ascending aorta replacement and 93% after bicuspid aortic valve repair alone. Ten-year survival was 95% after bicuspid aortic valve repair + ascending aorta replacement and 96% after bicuspid aortic valve repair alone. After matching, prevalence of severe aortic regurgitation at 10 years was 11% after bicuspid aortic valve repair + ascending aorta replacement and 9.1% after bicuspid aortic valve repair alone (P = .33); aortic valve gradient was 16 mm Hg after bicuspid aortic valve repair + ascending aorta replacement and 25 mm Hg after bicuspid aortic valve repair alone (P < .0001). Ten-year freedom from reoperation was 85% after bicuspid aortic valve repair + ascending aorta replacement and 72% after bicuspid aortic valve repair alone (P = .08) overall. Ten-year freedom from reoperation for late aortic regurgitation was 88% after bicuspid aortic valve repair + ascending aorta replacement and 86% after bicuspid aortic valve repair alone (P = .65). Freedom from aortic stenosis was 97% after bicuspid aortic valve repair + ascending aorta replacement and 91% after bicuspid aortic valve repair alone (P = .03). Ten-year survival was 96% after bicuspid aortic valve repair + ascending aorta replacement and 96% after bicuspid aortic valve repair alone (P = .16)., Conclusions: Bicuspid aortic valve repair with or without ascending aorta replacement is associated with good short- and long-term outcomes. Bicuspid aortic valve repair + ascending aorta replacement has a minimal effect on long-term repair durability. Sinutubular junction stabilization should not be performed for the sole purpose of long-term repair durability., (Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2023
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33. Contemporary experience with the Commando procedure for anterior mitral anular calcification.
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Kakavand M, Stembal F, Chen L, Mahboubi R, Layoun H, Harb SC, Xiang F, Elgharably H, Soltesz EG, Bakaeen FG, Hodges K, Vargo PR, Rajeswaran J, Firth A, Blackstone EH, Gillinov M, Roselli EE, Svensson LG, Pettersson GB, Unai S, Koprivanac M, and Johnston DR
- Abstract
Objective: Anterior mitral anular calcification, particularly in radiation heart disease, and previous valve replacement with destroyed intervalvular fibrosa are challenging for prosthesis sizing and placement. The Commando procedure with intervalvular fibrosa reconstruction permits double-valve replacement in these challenging conditions. We referenced outcomes after Commando procedures to standard double-valve replacements., Methods: From January 2011 to January 2022, 129 Commando procedures and 1191 aortic and mitral double-valve replacements were performed at the Cleveland Clinic, excluding endocarditis. Reasons for the Commando were severe calcification after radiation (n = 67), without radiation (n = 43), and others (n = 19). Commando procedures were referenced to a subset of double-valve replacements using balancing-score methods (109 pairs)., Results: Between balanced groups, Commando versus double-valve replacement had higher total calcium scores (median 6140 vs 2680 HU, P = .03). Hospital outcomes were similar, including operative mortality (12/11% vs 8/7.3%, P = .35) and reoperation for bleeding (9/8.3% vs 5/4.6%, P = .28). Survival and freedom from reoperation at 5 years were 54% versus 67% ( P = .33) and 87% versus 100% ( P = .04), respectively. Higher calcium score was associated with lower survival after double-valve replacement but not after the Commando. The Commando procedure had lower aortic valve mean gradients at 4 years (9.4 vs 11 mm Hg, P = .04). After Commando procedures for calcification, 5-year survival was 60% and 59% with and without radiation, respectively ( P = .47)., Conclusions: The Commando procedure with reconstruction of the intervalvular fibrosa destroyed by mitral anular calcification, radiation, or previous surgery demonstrates acceptable outcomes similar to standard double-valve replacement. More experience and long-term outcomes are required to refine patient selection for and application of the Commando approach., Competing Interests: The authors reported no conflicts of interest. The Journal policy requires editors and reviewers to disclose conflicts of interest and to decline handling or reviewing manuscripts for which they may have a conflict of interest. The editors and reviewers of this article have no conflicts of interest., (© 2023 The Author(s).)
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- 2023
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34. The decreasing risk of reoperative aortic valve replacement: Implications for valve choice and transcatheter therapy.
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Mahboubi R, Kakavand M, Soltesz EG, Rajeswaran J, Blackstone EH, Svensson LG, and Johnston DR
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- Humans, Aortic Valve diagnostic imaging, Aortic Valve surgery, Reoperation, Treatment Outcome, Risk Factors, Heart Valve Prosthesis Implantation adverse effects, Aortic Valve Stenosis surgery, Transcatheter Aortic Valve Replacement adverse effects
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Objective: Increasing use of bioprostheses for surgical aortic valve replacement (SAVR) in younger patients, together with wider use of transcatheter aortic valve replacement, necessitates understanding risks associated with surgical valve reintervention. Therefore, we sought to identify risks of reoperative SAVR compared with those of primary isolated SAVR., Methods: From January 1980 to July 2017, 7037 patients underwent nonemergency isolated SAVR, with 753 reoperations and 6284 primary isolated operations. These 2 groups were propensity score-matched on 46 preoperative variables, yielding 581 patient pairs for comparing outcomes., Results: Among propensity score-matched patients, aortic clamp time (median 63 vs 52 minutes; P < .0001), cardiopulmonary bypass time (median 88 vs 67 minutes; P < .0001), and postoperative stay (median 7.1 vs 6.9 days; P = .003) were longer for reoperative SAVR than primary isolated SAVR. Hospital mortality after reoperative SAVR decreased from 3.4% in 1985 to 1.3% in 2011, similar to that of primary isolated SAVR. Occurrence of stroke, deep sternal wound infection, and new renal dialysis was similar. Blood transfusion (67% vs 36%; P < .0001) and reoperations for bleeding/tamponade (6.4% vs 3.1%; P = .009) were more common after reoperative SAVR. Survival at 1, 5, 10, and 20 years was 94%, 82%, 64%, and 33% after reoperative SAVR and 95%, 86%, 72%, and 46% after elective primary isolated SAVR., Conclusions: Risk of mortality and morbidity after reoperative SAVR has declined and is now similar to that of primary isolated SAVR. Decisions regarding prosthesis choice and SAVR versus transcatheter aortic valve replacement should be made in the context of lifelong disease management rather than avoidance of reoperation., (Copyright © 2022 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.)
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- 2023
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35. Commentary: If you can't ride 2 horses at once, you shouldn't be in the circus.
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Frankel WC, Johnston DR, and Weiss AJ
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- Humans, Heart Valve Prosthesis Implantation, Aortic Valve surgery
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- 2023
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36. ARISE: First-In-Human Evaluation of a Novel Stent Graft to Treat Ascending Aortic Dissection.
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Roselli EE, Atkins MD, Brinkman W, Coselli J, Desai N, Estrera A, Johnston DR, Patel H, Preventza O, Vargo PR, Fleischman F, Taylor BS, and Reardon MJ
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- Humans, Female, Middle Aged, Aged, Aged, 80 and over, Male, Blood Vessel Prosthesis, Prospective Studies, Treatment Outcome, Prosthesis Design, Stents, Postoperative Complications etiology, Dissection, Ascending Aorta, Aortic Aneurysm, Thoracic surgery, Blood Vessel Prosthesis Implantation, Endovascular Procedures
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Background: Operative mortality for type A aortic dissection is still 10-20% at centers of excellence. Additionally, 10-20% are not considered as viable candidates for open surgical repair and not offered life-saving emergency surgery. ARISE is a multicenter investigation evaluating the novel GORE® Ascending Stent Graft (ASG; Flagstaff, AZ)., Objective: The purpose of this study is to assess early feasibility of using these investigational devices to treat ascending aortic dissection., Methods: This a prospective, multicenter, non-randomized, single-arm study that enrolls patients at high surgical risk with appropriate anatomical requirements based on computed tomography imaging at 7 of 9 US sites. Devices are delivered transfemorally under fluoroscopic guidance. Primary endpoint is all-cause mortality at 30 days. Secondary endpoints include major adverse cardiovascular and cerebrovascular events (MACCE) at 30 days, 6 months, and 12 months., Results: Nineteen patients were enrolled with a mean age of 75.7 years (range 47-91) and 11 (57.9%) were female. Ten (52.6%) had DeBakey type I disease, and the rest were type II. Sixteen (84.2%) of the patients were acute. Patients were treated with safe access, (7/19 (36.8%) percutaneous, 10/19 (52.6%) transfemoral, 2/19 (10.5%) iliac conduit), delivery, and deployment completed in all cases. Median procedure time was 154 mins (range 52-392) and median contrast used was 111 mL (range 75-200). MACCE at 30 days occurred in 5 patients including mortality 3/19 (15.8%), disabling stroke in 1/19 (5.3%), and myocardial infarction in 1/19 (5.3%)., Conclusion: Results from the ARISE early feasibility study of a specific ascending stent graft device to treat ascending aortic dissection are promising.
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- 2023
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37. Implementation of a direct-to-operating room aortic emergency transfer program: Expedited management of type A aortic dissection.
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Mehta CK, Chiu S, Hoel AW, Vassallo P, Whippo B, Andrei AC, Schmidt MJ, Pham DT, Johnston DR, Churyla A, and Malaisrie SC
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- Adult, Humans, Retrospective Studies, Aorta surgery, Hospital Mortality, Treatment Outcome, Operating Rooms, Aortic Dissection surgery
- Abstract
Introduction: Type A Aortic Dissection (TAAD) is a surgical emergency with a time-dependent rate of mortality. We hypothesized that a direct-to-operating room (DOR) transfer program for patients with TAAD would reduce time to intervention., Methods: A DOR program was started at an urban tertiary care hospital in February 2020. We performed a retrospective study of adult patients undergoing treatment for TAAD before (n = 42) and after (n = 84) implementation of DOR. Expected mortality was calculated using the International Registry of Acute Aortic Dissection risk prediction model., Results: Median time from acceptance of transfer from emergency physician to operating room arrival was 1.37 h (82 min) faster in DOR compared to pre-DOR (1.93 h vs 3.30 h, p < 0.001). Median time from arrival to operating room was 1.14 h (72 min) faster after DOR compared to pre-DOR (0.17 h vs 1.31 h, p < 0.001). In-hospital mortality was 16.2% in pre-DOR, with an observed-to-expected (O/E) ratio of 1.03 (p = 0.24) and 12.0% in the DOR group, with an O/E ratio of 0.59 (p < 0.001)., Conclusion: Creation of a DOR program resulted in decreased time to intervention. This was associated with a decrease in observed-to-expected operative mortality. The transfer of patients with acute type A aortic dissection to centers with direct-to-OR programs may result in decreased time from diagnosis to surgery., Competing Interests: Declaration of Competing Interest Christopher K. Mehta, MD: Gore: Speaker and Educational Funding. Duc Thinh Pham, MD: Abbott, Medtronic, Abiomed: Speaker and Advisory Panel. Douglas R. Johnston, MD: Advisor: Abbott, Edwards Lifesciences, Terumo, Livanova, HD Medical. S. Chris Malaisrie, MD: Edwards Lifesciences: Consultant; Medtronic, CryoLife, Atricure, Terumo Aortic: Consultant and Speaker. All other authors have nothing to disclose., (Copyright © 2023 Elsevier Inc. All rights reserved.)
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- 2023
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38. Avascular midline oropharyngeal anatomy allows for expanded indications for transoral robotic surgery in pediatric patients.
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Johnston DR, Maurrasse SE, and Maddalozzo JM
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- Humans, Child, Retrospective Studies, Tongue surgery, Tongue pathology, Hyoid Bone, Robotic Surgical Procedures methods, Robotics, Thyroglossal Cyst surgery, Thyroglossal Cyst pathology
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Transoral robotic surgery (TORS) in children is in its infancy, and indications have been primarily limited to lingual tonsillar hypertrophy and superficial mucosal lesions. However, the relatively avascular channel of the midline posterior tongue, vallecula, and posterior hyoid space provides a safe plane of dissection for deep lesions of the tongue and access to structures in the anterior neck. As robotic surgeons gain experience, application of this technology will continue to grow. The method is retrospective case series. We present seven patients who had either a primary (n = 3) or recurrent (n = 4) lingual thyroglossal duct cyst (TGDC) and underwent TORS excision. Four of the seven patients also underwent transoral resection of the central portion of the hyoid bone, while three had central hyoid resection during prior surgery. Two minor complications occurred with no evidence of lesion recurrence after mean follow-up of 19.7 mo. The midline avascular channel of the tongue allows for relatively bloodless surgical access to pathologies of the midline base of tongue and anterior neck. Lingual thyroglossal duct cysts can safely be removed via a TORS approach with evidence of limited recurrence. Robotic technology can provide safe and effective surgical alternatives for children with a variety of pathologies, and we aim to promote the widespread adoption of TORS in pediatric head and neck surgery by sharing our knowledge and clinical experience. Further study and publication are needed to establish safety and efficacy., (© 2023. The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.)
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- 2023
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39. Five-year Outcomes of the COMMENCE Trial Investigating Aortic Valve Replacement With RESILIA Tissue.
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Bavaria JE, Griffith B, Heimansohn DA, Rozanski J, Johnston DR, Bartus K, Girardi LN, Beaver T, Takayama H, Mumtaz MA, Rosengart TK, Starnes V, Timek TA, Boateng P, Ryan W, Cornwell LD, Blackstone EH, Borger MA, Pibarot P, Thourani VH, Svensson LG, and Puskas JD
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- Humans, Animals, Cattle, Middle Aged, Aged, Aortic Valve diagnostic imaging, Aortic Valve surgery, Prospective Studies, Treatment Outcome, Aortic Valve Stenosis, Heart Valve Prosthesis Implantation
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Background: The COMMENCE trial was conducted to evaluate the safety and effectiveness of aortic valve replacement using a bioprosthesis with novel RESILIA tissue (Edwards Lifesciences). RESILIA tissue is incorporated in the INSPIRIS RESILIA aortic valve (Edwards Lifesciences)., Methods: Patients underwent clinically indicated surgical aortic valve replacement with a bovine pericardial bioprosthesis (model 11000A; Edwards Lifesciences) in a prospective, multinational, multicenter (n = 27), US Food and Drug Administration Investigational Device Exemption trial. Events were adjudicated by an independent clinical events committee, and echocardiograms were analyzed by an independent core laboratory. Outcomes through an observational period of 5 years are reported., Results: Between January 2013 and March 2016, 689 patients received the study valve. Mean patient age was 66.9 ± 11.6 years; Society of Thoracic Surgeons Predicted Risk of Mortality was 2.0% ± 1.8%; and 23.8%, 49.9%, and 24.4% of patients were New York Heart Association functional class I, II, and III at baseline, respectively. Through December 11, 2020 the follow-up duration was 4.3 ± 1.4 years, and the completeness of follow-up over the observational period was 95.5%. Early (<30 days) all-cause mortality was 1.2%, stroke 1.6%, and major paravalvular leak 0.1%. Five-year actuarial freedom from all-cause mortality, structural valve deterioration, and all-cause reintervention were 89.2%, 100%, and 98.7%, respectively. At 5 years the effective orifice area was 1.6 ± 0.5 cm
2 , mean gradient was 11.5 ± 6.0 mm Hg, 97.8% of patients were class I/II, and 97.8% and 96.3% of patients had none/trace paravalvular and transvalvular regurgitation, respectively., Conclusions: The safety and hemodynamic performance of this aortic bioprosthesis with RESILIA tissue through 5 years are encouraging, with clinically stable hemodynamics, minimal regurgitation, and no evidence of structural valve deterioration., (Copyright © 2023 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)- Published
- 2023
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40. Choosing transcatheter aortic valve replacement in porcelain aorta: outcomes versus surgical replacement.
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Kramer B, Vekstein AM, Bishop PD, Lowry A, Johnston DR, Kapadia S, Krishnaswamy A, Blackstone EH, and Roselli EE
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- Humans, Dental Porcelain, Calcium, Aorta surgery, Aortic Valve diagnostic imaging, Aortic Valve surgery, Risk Factors, Treatment Outcome, Transcatheter Aortic Valve Replacement adverse effects, Aortic Valve Stenosis complications, Aortic Valve Stenosis surgery, Heart Valve Prosthesis Implantation methods, Stroke etiology
- Abstract
Objectives: Porcelain aorta complicates aortic valve replacement and is an indication for transcatheter approaches. No study has compared surgical and transcatheter valve replacement in the setting of porcelain aorta. We characterize porcelain aorta patients undergoing aortic valve replacement and the association of aortic calcification and outcomes., Methods: Patients undergoing aortic valve replacement with porcelain aorta were identified. Aortic calcium volume was determined using 3D computed tomography thresholding techniques. Propensity scoring was performed to assess the effect of surgical versus transcatheter approaches. Risk factors for composite major hospital complications (death, stroke and dialysis) were identified using random forest machine learning., Results: From January 2006 to January 2015, 164 patients with porcelain aorta underwent aortic valve replacement [105 (64%) surgical replacement, 59 (36%) transcatheter replacement]. Propensity scoring matched 29 pairs (49% of transcatheter patients). Before matching, 5-year survival was 41% [(43% surgical, 35% transcatheter, P(log-rank) = 0.9]. After matching, mortality for surgical versus transcatheter replacement was 3.4% (n = 1) vs 10% (n = 3), stroke 14% (n = 4) vs 3.4% (n = 1) and dialysis 6.9% (n = 2) versus 11% (n = 3). Matched 5-year survival was 40% after surgical replacement and 29% after transcatheter replacement [P(log-rank) = 0.4]. Total aortic calcium volume was greater in transcatheter than surgical patients [18 (8.0) vs 17 (7.7) ml] and was associated with more major hospital complications after either approach., Conclusions: Surgical and transcatheter approaches are complementary options for aortic stenosis with porcelain aorta. Surgical valve replacement remains an effective treatment for patients requiring concomitant procedures. Quantifying aortic calcium volume is a helpful risk predictor in all patients with porcelain aorta., (© The Author(s) 2023. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved.)
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- 2023
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41. Perioperative outcomes in children with Hashimoto's thyroiditis undergoing total thyroidectomy.
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Hazkani I, Edwards E, Stein E, Maddalozzo J, Johnston DR, Samis J, Josefson J, and Rastatter J
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- Child, Humans, Calcium, Postoperative Complications epidemiology, Postoperative Complications etiology, Postoperative Complications surgery, Retrospective Studies, Thyroidectomy adverse effects, Thyroidectomy methods, Hashimoto Disease complications, Hashimoto Disease surgery, Hypocalcemia epidemiology, Hypocalcemia etiology
- Abstract
Background: Hashimoto's thyroiditis (HT) affects 1-2 % of the pediatric population. In adults with HT, thyroidectomy is considered challenging and prone to postoperative complications due to the chronic inflammatory process. However, the complications of thyroidectomy among children with HT have not been established. The objective of our study was to evaluate whether children with HT undergoing total thyroidectomy for presumed thyroid cancer have higher complication rates than children without HT., Methods: A retrospective cohort study of children who underwent total thyroidectomy by high-volume pediatric otolaryngologists between 2014 and 2021., Results: 111 patients met inclusion criteria, 15 of these were diagnosed with HT preoperatively. Operative time and length of admission were similar among the groups. Postoperatively, patients with HT were more likely to have low levels of parathyroid hormone (60 % vs 26 %, p = 0.014) and transient hypocalcemia compared to non-HT patients, present with symptomatic hypocalcemia (67 % vs 27 %, p = 0.006), demonstrate EKG changes (20 % vs 6.3 %, p = 0.035) within 24 h of surgery, and to require both oral and intravenous calcium supplements (80 % vs 35 %, p = 0.001 and 60 % vs 22 % p = 0.004 respectively). Persistent hypocalcemia at 6 months follow-up, and recurrent laryngeal nerve paralysis rates were similar between groups. Parathyroid tissue was found in the thyroid specimen of 9 (60 %) HT patients vs 34 (35 %) non-HT patients (p = 0.069)., Conclusions: The risk of permanent complications among children with HT following thyroidectomy is low. However, patients with HT are more likely to develop symptomatic transient hypocalcemia and to require oral and intravenous calcium supplements in the immediate post-operative period compared to non-HT patients. Tailoring a perioperative treatment protocol to optimize calcium levels may be considered for children with HT., Competing Interests: Conflict of interest The authors declare that they have no conflict of interest and that this study did not receive financial support. All authors have seen and approved the manuscript., (Copyright © 2022 Elsevier Inc. All rights reserved.)
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- 2023
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42. Redefining "low risk": Outcomes of surgical aortic valve replacement in low-risk patients in the transcatheter aortic valve replacement era.
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Johnston DR, Mahboubi R, Soltesz EG, Artis AS, Roselli EE, Blackstone EH, and Svensson LG
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- Humans, Aortic Valve diagnostic imaging, Aortic Valve surgery, Treatment Outcome, Risk Factors, Transcatheter Aortic Valve Replacement adverse effects, Aortic Valve Stenosis diagnostic imaging, Aortic Valve Stenosis surgery, Aortic Valve Stenosis etiology, Heart Valve Prosthesis Implantation adverse effects
- Abstract
Objectives: Guidelines suggest aortic valve replacement (AVR) for low-risk asymptomatic patients. Indications for transcatheter AVR now include low-risk patients, making it imperative to understand state-of-the-art surgical AVR (SAVR) in this population. Therefore, we compared SAVR outcomes in low-risk patients with those expected from Society of Thoracic Surgeons (STS) models and assessed their intermediate-term survival., Methods: From January 2005 to January 2017, 3493 isolated SAVRs were performed in 3474 patients with STS predicted risk of mortality <4%. Observed operative mortality and composite major morbidity or mortality were compared with STS-expected outcomes according to calendar year of surgery. Logistic regression analysis was used to identify risk factors for these outcomes. Patients were followed for time-related mortality., Results: With 15 observed operative deaths (0.43%) compared with 55 expected (1.6%), the observed:expected ratio was 0.27 for mortality (95% confidence interval [CI], 0.14-0.42), stroke 0.65 (95% CI, 0.41-0.89), and reoperation 0.50 (95% CI, 0.42-0.60). Major morbidity or mortality steadily declined, with probabilities of 8.6%, 6.7%, and 5.2% in 2006, 2011, and 2016, respectively, while STS-expected risk remained at approximately 12%. Mitral valve regurgitation, ventricular hypertrophy, pulmonary, renal, and hepatic failure, coronary artery disease, and earlier surgery date were residual risk factors. Survival was 98%, 91%, and 82% at 1, 5, and 9 years, respectively, superior to that predicted for the US age-race-sex-matched population., Conclusions: STS risk models overestimate contemporary SAVR risk at a high-volume center, supporting efforts to create a more agile quality assessment program. SAVR in low-risk patients provides durable survival benefit, supporting early surgery and providing a benchmark for transcatheter AVR., (Copyright © 2021 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.)
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- 2023
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43. Aortic Valve Reconstruction With Autologous Pericardium Versus a Bioprosthesis: The Ozaki Procedure in Perspective.
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Unai S, Ozaki S, Johnston DR, Saito T, Rajeswaran J, Svensson LG, Blackstone EH, and Pettersson GB
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- Humans, Animals, Cattle, Aortic Valve diagnostic imaging, Aortic Valve surgery, Pericardium surgery, Hemodynamics, Treatment Outcome, Bioprosthesis, Heart Valve Prosthesis Implantation adverse effects, Heart Valve Prosthesis Implantation methods, Heart Valve Prosthesis, Aortic Valve Insufficiency surgery, Aortic Valve Stenosis surgery
- Abstract
Background We assessed the Ozaki procedure, aortic valve reconstruction using autologous pericardium, with respect to its learning curve, hemodynamic performance, and durability compared with a stented bioprosthesis. Methods and Results From January 2007 to January 2016, 776 patients underwent an Ozaki procedure at Toho University Ohashi Medical Center. Learning curves, aortic regurgitation (AR), and peak gradient, assessed by serial echocardiograms, valve rereplacement, and survival were investigated. Valve performance and durability were compared with 627 1:1 propensity-matched patients receiving stented bovine pericardial valves implanted from 1982 to 2011 at Cleveland Clinic. Learning curves were observed for aortic clamp and cardiopulmonary bypass times, AR prevalence, and early mortality. Decreased aortic clamp time was observed over the first 300 cases. New surgeons performing parts of the procedure after case 400 resulted in a slight increase in aortic clamp and cardiopulmonary bypass times. Among matched patients, the Ozaki cohort had more AR than the PERIMOUNT cohort (severe AR at 1 and 6 years, 0.58% and 3.6% versus 0.45% and 1.0%, respectively; P [trend]=0.006), although with a steep learning curve. Peak gradient showed the opposite trend: 14 and 17 mm Hg for Ozaki and 24 and 28 mm Hg for PERIMOUNT at these times ( P [trend] < 0.001). Freedom from rereplacement was similar ( P =0.491). Survival of the Ozaki cohort was 85% at 6 years. Conclusions Patients undergoing the Ozaki procedure had lower gradients but more recurrent AR than those receiving PERIMOUNT bioprostheses. Although recurrent AR is concerning, results confirm low risk and good midterm performance of the Ozaki procedure, supporting its continued use.
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- 2023
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44. Modern practice and outcomes of reoperative cardiac surgery.
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Kindzelski BA, Bakaeen FG, Tong MZ, Roselli EE, Soltesz EG, Johnston DR, Wierup P, Pettersson GB, Houghtaling PL, Blackstone EH, Gillinov AM, and Svensson LG
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- Humans, Retrospective Studies, Reoperation, Sternotomy adverse effects, Treatment Outcome, Postoperative Complications, Renal Dialysis, Cardiac Surgical Procedures adverse effects, Cardiac Surgical Procedures methods
- Abstract
Objectives: To evaluate recent practice and outcomes of reoperative cardiac surgery via re-sternotomy. Use of early versus late institution of cardiopulmonary bypass (CPB) before sternal re-entry was of particular interest., Methods: From January 2008 to July 2017, 7640 patients underwent reoperative cardiac surgery at Cleveland Clinic. The study group consisted of 6627 who had a re-sternotomy and preoperative computed tomography scans; 755 and 5872 were in the early and late institution of CPB groups, respectively. Patients were stratified into high (n = 563) or low (n = 6064) anatomic risk of re-entry on the basis of computed tomography criteria. Weighted propensity-balanced operative mortality and morbidity were compared with surgeon as a random effect., Results: Reoperative procedures most commonly incorporated aortic valve replacement (n = 3611) and coronary artery bypass grafting (n = 2029), but also aortic root (n = 1061) and arch procedures (n = 527). Unadjusted operative mortality was 3.5% (235/6627), and major sternal re-entry and mediastinal dissection injuries were uncommon (2.8%). In the propensity-weighted analysis, similar mortality (3.1% vs 4.5%; P = .6) and major morbidity, including stroke (1.8% vs 3.2%) and dialysis (0 vs 2.6%), were noted in the high anatomic risk cohort between early and late CPB groups. Similar trends were observed in the low anatomic risk cohort (mortality 3.5% vs 2.1%; P = .2)., Conclusions: Reoperative cardiac surgery is associated with low operative morbidity and mortality at an experienced center. Early and late CPB strategies have comparable outcomes in the context of an image-guided, team-based strategy., (Copyright © 2021. Published by Elsevier Inc.)
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- 2022
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45. Failure to Rescue After Cardiac Surgery at Minority-Serving Hospitals: Room for Improvement.
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Dewan KC, Zhou G, Koroukian SM, Gillinov AM, Roselli EE, Svensson LG, Johnston DR, Bakaeen FG, and Soltesz EG
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- Humans, Postoperative Complications epidemiology, Hospitals, Elective Surgical Procedures, Hospital Mortality, Retrospective Studies, Cardiac Surgical Procedures, Failure to Rescue, Health Care
- Abstract
Background: Despite living closer to high-performing centers, minority patients reportedly receive care at lower-quality hospitals. Investigating opportunities for improvement at minority-serving hospitals may help attenuate disparities in care among cardiothoracic surgery patients. We sought to investigate the relationship between hospital quality and failure to rescue (FTR)., Methods: Over 451,000 cardiac surgery patients from 2000 to 2011 at minority-serving hospitals (MSHs) were identified from the Nationwide Inpatient Sample. After stratifying patients by hospital mortality quartile, outcomes at poorly performing MSHs were compared with those at high-performing MSHs. Propensity score matching was used for comparisons., Results: Though patients at poorly performing centers were more likely Black, there were no significant differences in admission status (urgent vs elective), income, insurance, or risk before matching. There were no differences in comorbidities between low-performing and high-performing MSHs including chronic lung disease, coagulopathy, hypertension, and renal failure. While complications remained similar across mortality quartiles (29%, 32%, 31%, and 36%, respectively; P < .0001), FTR increased in a stepwise manner (5.4%, 8.7%, 11.2%, and 15.5%, respectively; P < .0001). The same was true after propensity score matching-FTR nearly tripled in the highest-mortality centers (14.4% vs 5.3%; P < .0001), while complications only increased 1.2-fold from 31.1% to 36.7% (P = .0058). This finding persisted even when stratified by procedure type and by complication., Conclusions: Improving timely management of complications after cardiac surgery may serve as a promising opportunity for increasing quality of care at MSHs. When considering centralization of care in cardiac surgery, equal emphasis should be placed on collaboration between tertiary care centers and low-quality MSHs to mitigate disparities in care., (Copyright © 2022 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
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46. Surgery for Aneurysmal Coronary Artery Fistulas to the Coronary Sinus in Adults: A Case Series.
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Iacona GM, Patel S, Bakaeen FG, Ghandour H, Stewart RD, Svensson LG, Pettersson GB, and Johnston DR
- Abstract
Surgical treatment of aneurysmal distal congenital coronary artery fistulas depends on size and anatomy. From 2008 to 2021, we applied a new surgical technique in 7 adult patients: proximal and distal fistula closure, opening of aneurysmal artery, and revascularization of branches rising from the fistula under cardiopulmonary bypass and cardiac arrest. ( Level of Difficulty: Intermediate. )., Competing Interests: The authors have reported that they have no relationships relevant to the contents of this paper., (© 2022 The Authors.)
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- 2022
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47. Similar long-term survival after isolated bioprosthetic versus mechanical aortic valve replacement: A propensity-matched analysis.
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Attia T, Yang Y, Svensson LG, Toth AJ, Rajeswaran J, Blackstone EH, and Johnston DR
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- Anticoagulants adverse effects, Aortic Valve diagnostic imaging, Aortic Valve surgery, Humans, Middle Aged, Prosthesis Design, Reoperation, Retrospective Studies, Survival Analysis, Treatment Outcome, Bioprosthesis adverse effects, Heart Valve Prosthesis adverse effects, Heart Valve Prosthesis Implantation adverse effects
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Objectives: Improved durability and preference to avoid anticoagulation have led to increasing use of bioprostheses in younger patients despite the need for eventual reoperation. Therefore, we compared in-hospital complications, reoperation, and survival after bioprosthetic and mechanical aortic valve replacement., Methods: From January 1990 to January 2020, 6143 patients underwent isolated aortic valve replacement at Cleveland Clinic; 637 patients received a mechanical prosthesis and 5506 a bioprosthesis. Propensity matching identified 527 well-matched pairs (83% of possible matches) for comparison of perioperative outcomes. The average age of patients was 54 years in the bioprosthesis group and 55 years in the mechanical prosthesis group. Random Forest machine-learning analysis was performed to compare survival using the entire cohort of 6143 patients., Results: Among matched patients, major in-hospital complications, including stroke, deep sternal wound infection, and reoperation for bleeding, were similar, as was in-hospital mortality (2 in the bioprosthesis group [0.38%] vs 3 in the mechanical prosthesis group [0.57%]; P > .9). Patients receiving a bioprosthesis had shorter hospital stays (median 6 vs 7 days, P < .0001). Fifty-one patients (32% at 14 years) in the bioprosthesis group and 17 patients in the mechanical prosthesis group (8% at 14 years) underwent reoperation (P [log-rank] < .0001); 5-year survival after reoperation was 85% versus 82% (P = .6). Risk-adjusted Random Forest prediction of 18-year survival was 60% in the bioprosthetic group and 58% in the mechanical prosthesis group., Conclusions: Aortic valve bioprostheses are associated with excellent short-term outcomes and 18-year survival similar to that of patients receiving mechanical valves. Reoperation does not adversely affect survival. These results suggest that risk for reoperation alone should not deter the use of bioprostheses in younger patients., (Copyright © 2021 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.)
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- 2022
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48. Two-year outcomes after transcatheter aortic valve-in-valve implantation in degenerated surgical valves.
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Abushouk AI, Abdelfattah O, Gad MM, Saad A, Hariri E, Isogai T, Shekhar S, Reed GW, Puri R, Yun J, Vargo PR, Weiss AJ, Burns D, Unai S, Popovic Z, Harb SC, Krishnaswamy A, Svensson LG, Johnston DR, and Kapadia SR
- Subjects
- Male, Humans, Aged, Female, Aortic Valve diagnostic imaging, Aortic Valve surgery, Prosthesis Failure, Reoperation methods, Treatment Outcome, Heart Valve Prosthesis adverse effects, Bioprosthesis adverse effects, Transcatheter Aortic Valve Replacement adverse effects, Transcatheter Aortic Valve Replacement methods, Aortic Valve Stenosis diagnostic imaging, Aortic Valve Stenosis surgery, Aortic Valve Stenosis etiology, Heart Valve Prosthesis Implantation methods
- Abstract
Background: Transcatheter aortic valve-in-valve implantation (ViV-TAVI) has emerged in recent years as a safe alternative to redo surgery in high-risk patients. Although early results are encouraging, data beyond short-term outcomes are lacking. Herein, we aimed to assess the 2-year outcomes after ViV-TAVI., Methods: Patients undergoing ViV-TAVI for degenerated surgical valves between 2013 and 2019 at the Cleveland Clinic were reviewed. The coprimary endpoints were all-cause mortality and congestive heart failure (CHF) hospitalizations. We used time-to-event analyses to assess the primary outcomes. Further, we measured the changes in transvalvular gradients and the incidence of structural valve deterioration (SVD)., Results: One hundred and eighty-eight patients were studied (mean age = 76 years; 65% males). At 2 years of follow-up, all-cause mortality and CHF hospitalizations occurred in 15 (8%) and 28 (14.9%) patients, respectively. On multivariable analysis, the postprocedural length of stay was a significant predictor for both all-cause mortality (hazard ratio [HR] = 1.1; 95% confidence interval [CI]: 1.01, 1.19) and CHF hospitalization (HR = 1.16; 95% CI: 1.07, 1.27). However, the internal diameter of the surgical valve was not associated with significant differences in both primary endpoints. For hemodynamic outcomes, nine patients (4.8%) developed SVD. The mean and peak transvalvular pressure gradients remained stable over the follow-up period., Conclusion: ViV-TAVI for degenerated surgical valves was associated with favorable 2-year clinical and hemodynamic outcomes. Further studies are needed to better understand the role of ViV-TAVI as a treatment option in the life management of aortic valve disease., (© 2022 Wiley Periodicals LLC.)
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- 2022
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49. Is There a "One Size Fits All" Minimally Invasive Approach for Valve Surgery?
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Johnston DR and Gillinov AM
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- Humans, Minimally Invasive Surgical Procedures, Sternotomy, Treatment Outcome, Heart Valve Prosthesis Implantation, Mitral Valve surgery
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- 2022
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50. Risks and Outcomes of Reoperative Cardiac Surgery in Patients With Patent Bilateral Internal Thoracic Artery Grafts.
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Bakaeen FG, Ghandour H, Ravichandren K, Pettersson GB, Weiss AJ, Zhen-Yu Tong M, Soltesz EG, Johnston DR, Houghtaling PL, Smedira NG, Roselli EE, Blackstone EH, Gillinov AM, and Svensson LG
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- Aged, Cardiac Output, Low etiology, Coronary Artery Bypass methods, Female, Humans, Internal Mammary-Coronary Artery Anastomosis methods, Male, Middle Aged, Reoperation, Mammary Arteries surgery
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Background: Reoperative cardiac surgery in patients with patent bilateral internal thoracic artery (ITA) grafts is technically challenging., Methods: From 2008 to 2017, of 7640 patients undergoing reoperative cardiac surgery, 116 (1.5%) had patent bilateral ITA grafts, including 28 with a right ITA crossing the midline. Mean age was 70 ± 9.6 years, and 111 patients (96%) were men. Reoperations included isolated coronary artery bypass grafting (n = 11), isolated valve (n = 55), valve + coronary artery bypass grafting (n = 26), and other procedures (n = 24). Clinical details, intraoperative management, and perioperative outcomes were analyzed., Results: Aortic cannulation was central in 64 patients (56%) and through the femoral or axillary artery in 50 (44%). Four patients (3.4%) had planned transection and reattachment of ITAs crossing the midline, and 4 (3.4%) had ITA injuries, all right ITAs, 3 crossing the midline; 3 were repaired with an interposition vein graft, and 1 was managed by translocating the right ITA as a Y-graft off another graft. Patent ITAs were managed by atraumatic occlusion during aortic clamping in 90 patients (78%) and by systemic cooling without ITA occlusion in 19. There were 6 operative deaths, all due to low cardiac output syndrome (5.2%); 4 strokes (3.4%); and 5 cases of new postoperative dialysis (4.3%)., Conclusions: Risk of injury to bilateral ITA grafts during reoperation is high, and right ITAs crossing the midline present a particular risk of injury and should inform planning for primary coronary artery bypass grafting. Risk of low cardiac output syndrome underscores the challenge of ensuring adequate myocardial protection., (Copyright © 2022 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)
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- 2022
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